Founded in 1996, Tianjin Evision Technology Co., Ltd (Used Name: Tianjin Dongchang Fine Chemical lndustry Co., Ltd.) is a hi-tech enterprise for research & development, production of pharmaceutical raw material, intermediates, chemical regents and dyes. Has the strength of scientific research, advanced production equipments and complete detection conditions to assure products can be finished with high quality on time. Over years, our main products has occupied important market share in domestic and international market, such as pidotimod, P-toluenesulfonylmethyl Isocyanide, bromocresol green, and m- cresol purple, etc. These products have been in the stage of industrialization, quality is stable and price is competitive. Our company takes quality as first factor for survival, put sc..